Re: share a new 11gR2 feature

From: Nuno Souto <>
Date: Sat, 05 Sep 2009 10:59:35 +1000
Message-ID: <>

Matthew Zito wrote,on my timestamp of 5/09/2009 2:05 AM:
> This would, indeed, be a useful feature if anyone these days actually
> ran their data on physical disks.

Er..... Are you sure you mean that? What should they use then? Tapes?

> With today's world of wide-striping,
> massive array caches, write re-ordering, and storage virtualization, I
> doubt it will make much difference.

Sorry Mathew, but you got to be joking. What's that got to do with gigabytes of allocated space that never is used? And what exactly is an "array cache" and what has that got to do with persistent, unused storage? "Virtualized" storage? In what way does that change the fact that storage space, in whatever format it may take - virtual or not - is being used for absolutely nothing? Last time I looked virtual is not a synonym for free: it still has to be paid for. Use it to store nothing and you are essentially wasting money. I can show you numerous examples, in fact just about any corporation, where such activity would be frowned upon.

> It IS very interesting, though, for the argument that Oracle is gonna
> continue arguing that you can just buy lots of JBOD arrays and do data
> resiliency in software, rather than investing in enterprise storage.

I don't think so. Data resiliency is for data, hence the name. This is for absence of data, a totally different proposition.

Nuno Souto
in sunny Sydney, Australia

Received on Fri Sep 04 2009 - 19:59:35 CDT

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